Conveyer-belt.



N. s. DODGE.

GONVEYBR BELT. APPLICATION FILED NOV. 8, 1909,

Patented Apr. 18,1911.

,TES

* TE sa uia'rnnm sns, 110mm,- 015 A AMEDA, CALIFORNIA.

CONVEYER-BELT.

Alameda, inthe county of Alameda and State of California, haveinvented new and useful Improvements in Con'veyer-Belts, of

. which the following is a specification,

'My invention relates to conveyer belts, and pertains especially to a belt for use with troughing idlers, such as used on a tailings stacker on a dredger, or for conveying other rough, irregular and heavy substances.

.The invention consists of the parts and the construction and combination of parts as hereinaftermore fully described and claimed, having reference to the accompanying drawings, in which Figure 1 is a cross-section of the belt..

' Fig. 2 is a similar section showing a modifi-- cation. Fig. 3 is a cross-section showing the belt in position on the carrier rollers.

Fig. 4 is a similar viewshowing the belt of- Fig. 2 in position. h

e rubber coverA of the belt 2 is thin on the sides-and thick in the center. As these conveyer belts carry their load in a pyramid, as a rule, the heaviest load is in the center, and this center also takes threequarters of the impact of the material when it falls upon'it from the-spouts or guides. This belt runs, as is the usual practice now in c'onveyer machinery, over the troughing idlers or carrier rollers 3, divided in three,

' two of which are at an angle, eachwith its own bearings, consequently placing the belt in the shape of a trough, thus allowing it to carry far greater loads, by preventing spilling. As, my belt is made with a crowning surface, if itwere run on a flat pulley it would have a tendency to throw the material toward the edges and spill it,- and it plies 5 and the outside would be a disadvantage instead of the opposite; but with the carrier or troughing idlers my belt presents a thick surface at the wearing point, or the center, and it gradually. decreases in thickness until the sides are reached, where there is no necessity I for a heavy cover of rubber, for there is no. wear at these outside points.

As shown in Fig. 2,-I have also foundit a valuable improvement to place a considerable body of rubber, as 4, between the main ply or plies .6 at the crowned surface, thus obtaining the advantage of the thickness and consequent resiliency; placing the strong canvas 6 close Specification of Letters Patent.

' Application filed November 5, 1909. Serial No. 526,778

served by maintaining rubber coating.

Patented Apr. 18, 19111..

to the surface prevents stripping of. the mam body of soft rubber should the belt become cau ht in any obstacle.

In both t ese constructions of belt it is to be noted that none ofthe canvas is cut away, that the full strength of the belt is pretlie same number of plies throughout the width of the belt, and that the center of the belt has just as much canvas'as the edges of the belt. The only difference between Figs. 1 and 2 is that in Fig. 1, first described, all the ,plieslie close together and parallel, with the thickness of rubber alo'ng .the'crown of the belt lying principally above the canvas; while in Fig. 2, representing the .-modification, there is at the edges, and the same number, practicall y, as represented in Fig. 1, the topply is lifted up and an additional rubber filling placed between this top p'ly and the underneath main plies 5, and also an additional coating of rubber is placed on top of the upper reinforcing ply 6.

Having thus described my invention, what I claim and desire to secureby Letters Patent isplies throughout its width and having a rubber filler inserted between its plies along its central portion said filler being thickest at its center and tapering in thickness from the center toward each side edge 2. .fabric rubber-coated" belt 'for coniveying rough irregular and heavy substance, said belt having ,a like number of plies throughout its width, and having an extra ply of fabric and a rubber filler along the centralportionof the belt, said filler being thickest at its center and tapering in thickand said extra ply, said belt having an outer 3. A"carrier belt having a fabric body with 'a rubber covering, the fabric body of uniform thickness throughout the width of the belt, and the rubber. coating being .thickest at the center of the belt and tapering toward the sides, and a ply of canvas integral with said fabric body and raised above the same and embedded intherubber coating. t

4. A conveyer belt comprising a body of the same number of plies at the centenas 1. A fabric rubbercoated belt forconveying rough irregular and heavy substances, said belt havin a like number of V 'ness from the .center toward each side edge and inserted between the plies of thebelt fabric consisting of the same number of body of fabric and reinforcing said conplies throughoutfihe width of the belt, the vexed rubber covering, said reinforcing ply. topmost ply raised from the body of fabric, being integral with said body of fabric. and a rubber filler inserted between the top- 1 In testimony whereof I have hereunto set most ply and the body of fabric to render my hand in the presence of two subscribing 15 the belt thicker at the middle than at the witnesses. sides. NATHANIEL S. DODGE.

5. A carrier belt having a fabric body Witnessesf with a convexed rubber-covered carrying -.OH ARL1ES A. PENFIELD, 1

1 surface, and a ply of fabric raised from said CHARLES EDELMAN. 

